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Bandl's ring (also known as pathological retraction ring) is the abnormal junction between the two segments of the uterus; it is a late sign associated with obstructed labor. [1] Prior to the onset of labor, the junction between the lower and upper uterine segments is a slightly thickened ring.
This is a skin condition of unknown origin that causes a whitish ring of indurated tissue (a cicatrix) to form near the tip of the prepuce. This inelastic tissue prevents retraction. Phimosis may occur after other types of chronic inflammation (such as balanoposthitis), repeated catheterization, or forcible foreskin retraction. [31]
Ludwig Bandl (1 November 1842 – 26 August 1892) was an Austrian obstetrician and gynecologist born in Himberg, Niederösterreich.. In 1867 he received his medical doctorate from the University of Vienna, where he studied under Karl von Braun-Fernwald (1822–1891), Joseph Hyrtl (1810–1894), and Johann von Dumreicher (1815–1880).
The uterus continues to try to expel the impacted fetus and as its retraction ring rises, the musculature in the lower segments thins out leading eventually to a uterine rupture and the death of the mother. [1] [4] Impacted shoulder presentations contribute to maternal mortality. [5]
Kayser–Fleischer ring: Bernhard Kayser, Bruno Fleischer: neurology, gastroenterology: Wilson's disease (hepatolenticular degeneration) ring of brownish copper deposit at corneo-scleral junction Kehr's sign: Hans Kehr: trauma surgery: ruptured spleen: referred pain to L shoulder Kelly's sign: Howard Atwood Kelly: surgery, urology
Constriction ring syndrome (CRS) is a congenital disorder with unknown cause. Because of the unknown cause there are many different, and sometimes incorrect, names. It is a malformation due to intrauterine bands or rings that produce deep grooves in (most commonly distal) extremities such as fingers and toes.
Clot retraction is the "shrinking" of a blood clot over a number of days. In doing so, the edges of the blood vessel wall at the point of injury are slowly brought together again to repair the damage that occurred. Clot retraction is dependent on the release of multiple coagulation factors from platelets trapped in the fibrin mesh of the
A ring of floaters or hairs just to the temporal side of the central vision As a posterior vitreous detachment proceeds, adherent vitreous membrane may pull on the retina. While there are no pain fibers in the retina, vitreous traction may stimulate the retina, with resultant flashes that can look like a perfect circle.